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Universidad de Alcalá (2020)

Restauración ecológica del Cabezo Ventura (Cartagena, Región de Murcia) : adaptación al cambio climático de un pinar en decaimiento

Esteves Carvalhaes, Tiago

Titre : Restauración ecológica del Cabezo Ventura (Cartagena, Región de Murcia) : adaptación al cambio climático de un pinar en decaimiento

Auteur : Esteves Carvalhaes, Tiago

Université de soutenance : Universidad de Alcalá

Grade : Máster Universitario en Restauración de Ecosistemas 2020

Résumé
Forest systems at the southeast of the Iberian Peninsula are especially vulnerable to climate change, where increasingly frequent and intense droughts and heat waves have caused severe damage to Pinus halepensis afforestations. Cabezo Ventura is a small volcanic elevation located in the region of Campo de Cartagena (Region of Murcia, Spain) where has been observed a massive Pinus halepensis afforestation dieback on the southern slopes after the drought registered between 2014 and 2016. We studied the dying pine forest, the natural vegetation and the soil properties of CV to design an ecological restoration project that promotes the adaptation of the vegetation of the southern slopes of CV to climate change. The living pines displayed reduced size for age (about 45 years) and signs of generalized stress as a function of orientation, nutritional state, health status or a combination of these. The soil is mainly shallow and with low fertility, although its properties seem to be spatially heterogeneous. The presence of pines significantly affected the vegetation cover, abundance and richness of perennial species. We designed and implemented the first phase of an ecological restoration project, which included the eradication of the invasive exotic species Nicotiana glauca, the sanitation of the decayed pines and the introduction of natives species better adapted to the progressive increase in temperatures and the general reduction of the rainfall observed on a regional scale. We also planned a second phase of action based on a short-term monitoring and evaluation scheme.

Mots clés  : SE Ibérico Repoblación Pinus halepensis Vegetación natural Sequía Saneamiento Southeast Iberian Peninsula Afforestation Natural vegetation Drought Sanitation

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Page publiée le 29 janvier 2021